Which of the following ions is essential for | vedclass

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(B) $Mg^{2+}$ and $Ca^{2+}$ ions are essential for muscular contraction.$1$. $Mg^{2+}$ ions are required for the polymerization of $G-	ext{actin}$ in

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$Mg^{2+}, Ca^{2+}$

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(B) $Mg^{2+}$ and $Ca^{2+}$ ions are essential for muscular contraction.$1$. $Mg^{2+}$ ions are required for the polymerization of $G-	ext{actin}$ into $F-	ext{actin}$ filaments.$2$. $Ca^{2+}$ ions bind to the $TpC$ subunit of troponin,which causes a conformational change that displaces the troponin-tropomyosin complex,thereby exposing the active myosin-binding sites on the actin filament.

Which of the following ions is essential for muscular contraction?

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